Seat or platform for outside window cleaning



Feb. 14, 1928. 1,658,942

J. A. RENSTROM SEAT 0R PLATFORM FOR OUTSIDE WINDOW'CLEANING Filed July'6. 1927 INVENTOR ATTORNEY.

Patented Feb. 14, 1928. r

f UNITED STATES JOHN A. RENSTROM, OF SAN FRANCISCO, CALIFORNIA. I

EsEAT OB PLA'IFORM FOR OUTSIDE WINDOW CLEANING.

Application filed July 6, 1927. Serial No. 203,726.

This invention relates to improvements in utility appliances and more particularly to a safety seat or platform for those engaging in window cleaning that is adapted for placement in the window frames of dwellings, or like buildings, to afford a safe footing or seat and facilitate the work of cleaning windows from the outside of such structures. 2 The primary object of my invention is to provide a safety seat or platform of the class indicated that is very simple in design and construction, is strong, durable and thatmay be" readily and safely adjusted to any ordinary window frame.

Another object of my invention is the provision of a safety seat of the class indicated that embodies in its construction-simplemeans adapting it to be readily hooked in place upon the sill of a window frame without the use of clamping bolts or clampmembers of any description.

Other objects and advantages of my invention will be apparent with reference to the subjoined specification and accompanying drawing in which:

.Figure 1 is a perspective view illustrating my safety seat, or platform, adjusted to position for use;

Figure 2 is a side elevation of the same, showing the seat, or platform, mounted upon the sill of a window frame, with its supporting brace adjusted to position against the outside. wall of a building; and

Figure 3 is a transverse sectional detail, showing the method of hingedly securing the supporting brace to the seat, or platform, of the device.

Referring more particularlyto the draw.

form proper which is preferably constructed from any suitable material, such as p1ne, or

like material.

The seat, or platform, 6, is preferably rectangular in shape and of sufficient size to readily accommodate a person in either sitting or standing position. An angle iron retaining member 7 is bolted, or otherwise secured, to the under edge of one end of the seat 6 by the bolts, or screws, 8, in such manner that, when the seat portion 6 is placed in a horizontal position in the window frame,

as shown in Figure 2, the depending portion of the angle iron member abuts against the.

edge of the sill, with the section 9. thereof resting upon the upper face of said sill and the seat, 6 extending outwardly somedistance beyond the outer wall of the building,

The outer under edge of the seat 6 is provided with a bracket 10 which bracket issecurely attached thereto by means of bolts, or screws,-11', and provided with depending ears 12 and 13, Figure 3, these ears being perforated for the reception of a hinge rod 14, the extremities of said rod 14 extending slightly beyond the cars 12 and 13 and forming supports fort-he supporting frame 15.

The supporting frame 15 comprises a pair of braces 16and 17 havinga series of perforations 1S adapting them for hinged mounting upon the extremities of the rod 14 I and for adjustment as to length, said braces being mounted upon the outside faces of the ears12 and 13 and adapted for frictional adjustment relative thereto by meansv of wing-nuts 19 and 20, which nuts are threaded upon the extremities of said rod let.

The lower ends of the braces 16 and 17 are provided with perforations 21 adapted to receive the lugs 22, which are formed upon opposite ends of a transverse bar 23,

said transverse'bar 23 being free for revo luble movement relative to the frame braces and having rigidly bolted, or; otherwise attached thereto, a transverse wall-engaging block 24, said transverse block being adapted to adjust itself to position when abutted against the exterior surface of a perpendicular wall of a building, or like structure,

and to form a support, or'hrace, against the downward pressure of the frame 15.

The braces 16 and 17 are. provided intermediate their ends with a transverse bar 25, which bar 25' is provided with lugs 26 adapted to lit in perforations formed in said braces.

A tongue, or brace, 27 is hingedly secured to the underside of the seat 6, about centrally of its width and approximately centrally of its length, by means of a pintle 28 and hinge plate 29, said plate 29 being rigidly bolted, or otherwise secured, to the seat 6, as shown in Figure 2.

The free end of the tongue, or brace, 27 is provided with a row of perforations 30, in one of which is mounted a bolt 31, said bolt 31' being adapted to engage a. perforation formed centrally of the bar 25 and adapted for rigid securement thereto by a seat 6 will be readily supported by virtue of the frame 15 acting as a rigid support against the exterior surface of the building, said frame being in turn tied to the seat by the tongue 27, the downward pressure ere erted upon said seat being equally distributed to the frame and tongue 27. When properly positioned in the window frame, it will be impossible to accidentally disengage the seat thereform and said seat will, when properly adjusted, maintain itself in a horizontal position, or at right angles to the perpendicular wall of the building.

When out of use the device may be col lapsed by removing the wing nut 32 and folding the frame 15 and tongue 27 flat against the underside of the seatv Having thus described my invent on,

secure by Letters adapted to engage the sill of a window frame, a bracket secured to the opposite end of said seat, a supporting frame hingedly secured to said bracket and comprising a pair of spaced braces having a tranverse wall-engaging block pivotally mounted between their lower ends and adapted to adjust itself to a perpendicular supporting wall, a cross bar pivotally mounted intermediate the ends of said braces, and a hinge plate mounted upon the underside of said seat and carrying a depending tongue, or brace, said tongue, or brace, having means for its adjustable connection to said pivoted cross bar to rigidly tie said frame in adjusted position relative to said seat.

in testimony whereof, I hereby aliix my signature this first day of July, 1927.

JOHN A. RENsTRoM. 

